<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>珠峰培训</title>
    <!-- IMPORT CSS -->
    <link rel="stylesheet" href="css/reset.min.css">
    <style>
        body {
            height: 500vh;
        }

        .pic-box {
            position: absolute;
            top: 1000px;
            left: 50%;
            margin-left: -200px;
            width: 400px;
            height: 225px;
            background: #DDD;
        }

        .pic-box img {
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity .3s;
        }
    </style>
</head>

<body>
    <div class="pic-box">
        <img src="" data-image="images/girl.webp" alt="">
    </div>

    <!-- IMPORT JS -->
    <script src="utils.js"></script>
    <script src="lazyImage2.js"></script>
</body>

</html>